{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6bb0fd38660f68f4d824101fdf6b50cde4bfe84f04d9237d85f9fa46b19dada3",
    "signature": "0xbdc486c48c5752f66a36566f1ef47061dbe09aa2d8f655b5259c3a4355cd9fef521ab51a53478a798991f24316dbe6a0667cdb100a012715d9badcad60c4ef8b1c",
    "signer": "0x9D25CA757001F2f1F62f38c465aa70E0f89Ea39D",
    "userId": "879689249"
  }
}